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Holocene carbon acc...
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Hao, QianTianjin University, China
(author)
Holocene carbon accumulation in lakes of the current east Asian monsoonal margin: Implications under a changing climate
- Article/chapterEnglish2020
Publisher, publication year, extent ...
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Elsevier,2020
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Numbers
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LIBRIS-ID:oai:DiVA.org:lnu-96155
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https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96155URI
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https://doi.org/10.1016/j.scitotenv.2020.139723DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Carbon (C) present in lake sediments is an important global sink for CO2; however, an in-depth understanding of the impact of climate variability and the associated changes in vegetation on sediment C dynamics is still lacking. A total of 13 lakes were studied to quantify the influence of climate and vegetation on the reconstructed Holocene C accumulation rate (CAR) in lake sediments of the modern East Asian monsoonal margin. The corresponding paleoclimate information was assessed, including the temperature (30–90°N in the Northern Hemisphere) and precipitation (indicated by the δ18O of the Sanbao, Dongge, and Hulu caves). The Holocene vegetation conditions were inferred by pollen records, including arboreal pollen/non-arboreal pollen and pollen percentages. The results showed that the peak CAR occurred during the mid-Holocene, coinciding with the strongest period of the East Asian summer monsoon and expansion of forests. Lakes in the temperate steppe (TS) regions had a mean CAR of 13.41 ± 0.88 g C m−2 yr−1, which was significantly greater than the CARs of temperate desert (TD) and highland meadow/steppe (HMS; 6.76 ± 0.29 and 7.39 ± 0.73 g C m−2 yr−1, respectively). The major influencing factor for the TS sub-region was vegetation dynamics, especially the proportion of arboreal vegetation, while temperature and vegetation coverage were more important for the HMS. These findings indicate that C accumulation in lake sediments is linked with climate and vegetation changes over long timescales; however, there was notable spatial heterogeneity in the CARs, such as opposing temporal changes and different major influencing factors among the three sub-regions during the mid-Holocene. Aridification and forest loss would decrease C storage. However, prediction of C accumulation remains difficult because of the spatial heterogeneity in CARs and the interaction between the CAR and various factors under future climate change conditions.
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Yang, ShileiTianjin University, China
(author)
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Song, ZhaoliangTianjin University, China
(author)
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Ran, XiangbinState Oceanic Administration, China
(author)
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Yu, Changxun,1983-Linnéuniversitetet,Institutionen för biologi och miljö (BOM)(Swepub:lnu)chyuaa
(author)
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Chen, ChunmeiTianjin University, China
(author)
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Van Zwieten, LukasNew South Wales Department of Primary Industries, Australia
(author)
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Quine, Timothy A.University of Exeter, UK
(author)
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Liu, HongyanPeking University, China
(author)
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Wang, ZhengangSun Yat-Sen University, China
(author)
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Wang, HailongFoshan University, China;Zhejiang A&F University, China
(author)
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Tianjin University, ChinaState Oceanic Administration, China
(creator_code:org_t)
Related titles
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In:Science of the Total Environment: Elsevier737, s. 1-130048-96971879-1026
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Hao, Qian
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Yang, Shilei
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Song, Zhaoliang
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Ran, Xiangbin
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Yu, Changxun, 19 ...
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Chen, Chunmei
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Van Zwieten, Luk ...
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Quine, Timothy A ...
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Liu, Hongyan
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Wang, Zhengang
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Wang, Hailong
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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Linnaeus University